Related Party Transactions Company Repurchase of Common Stock from Related Parties (Details) (USD $)	3 Months Ended
Jun. 30, 2013
Related Party Transactions [Abstract]
Treasury stock shares acquired from Company officers	17,524
Treasury stock acquired from Company officers (dollars per share)	$ 71.50

Cost per share of Company common stock repurchased from officers of the Company

No definition available.

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Namespace Prefix:	itic_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration